It was either one of three things.
#1. Some AH
#2. A poorly executed terrorist act. (remember the AH who flew the light aircraft into the building in Tampa after he wrote a note pledging his love for OBL.
#3. A gang deal/warning. There has been a very heavy LEO presence at Pleasure Island, the night club part of WDW for about two weekends. This was in response to gangs gathering there in their “uniforms” of hoodies and jeans down around their arse and hassling the tourists. Cops are taking no nonsense from the hoods, as they know word would spread very quickly, good or bad.
I’ve been following the gang activity at Disney - I tend to think that’s what this was. It’s getting gang-ugly around here lately.